[U-Boot] [PATCH] env_nand: use nand_spl_load_image for readenv if SPL

The readenv() implementation of env_nand uses the mtd layer which is unnecessary overhead in SPL when we already have a nand_spl_load_image() function that doesn't need it. Using this instead eliminates the need to provide a mtd_read for SPL env as well as reduces code (4KB savings in IMX6 SPL).
Signed-off-by: Tim Harvey tharvey@gateworks.com --- common/env_nand.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/common/env_nand.c b/common/env_nand.c index 7fc7558..bab89fd 100644 --- a/common/env_nand.c +++ b/common/env_nand.c @@ -260,6 +260,12 @@ int saveenv(void) } #endif /* CMD_SAVEENV */
+#if defined(CONFIG_SPL_BUILD) +static int readenv(size_t offset, u_char *buf) +{ + return nand_spl_load_image(offset, CONFIG_ENV_SIZE, buf); +} +#else static int readenv(size_t offset, u_char *buf) { size_t end = offset + CONFIG_ENV_RANGE; @@ -295,6 +301,7 @@ static int readenv(size_t offset, u_char *buf)
return 0; } +#endif /* #if defined(CONFIG_SPL_BUILD) */
#ifdef CONFIG_ENV_OFFSET_OOB int get_nand_env_oob(nand_info_t *nand, unsigned long *result)

On Thu, 2015-05-14 at 11:48 -0700, Tim Harvey wrote:
The readenv() implementation of env_nand uses the mtd layer which is unnecessary overhead in SPL when we already have a nand_spl_load_image() function that doesn't need it. Using this instead eliminates the need to provide a mtd_read for SPL env as well as reduces code (4KB savings in IMX6 SPL).
Signed-off-by: Tim Harvey tharvey@gateworks.com
common/env_nand.c | 7 +++++++ 1 file changed, 7 insertions(+)
Acked-by: Scott Wood scottwood@freescale.com
-Scott

Hi Tim,
On 15/05/2015 20:59, Scott Wood wrote:
On Thu, 2015-05-14 at 11:48 -0700, Tim Harvey wrote:
The readenv() implementation of env_nand uses the mtd layer which is unnecessary overhead in SPL when we already have a nand_spl_load_image() function that doesn't need it. Using this instead eliminates the need to provide a mtd_read for SPL env as well as reduces code (4KB savings in IMX6 SPL).
Signed-off-by: Tim Harvey tharvey@gateworks.com
common/env_nand.c | 7 +++++++ 1 file changed, 7 insertions(+)
Acked-by: Scott Wood scottwood@freescale.com
Applied to u-boot-imx, thanks !
Best regards, Stefano Babic
participants (3)
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Scott Wood
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Stefano Babic
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Tim Harvey